diff --git a/sdk/servicenetworking/azure-mgmt-servicenetworking/_meta.json b/sdk/servicenetworking/azure-mgmt-servicenetworking/_meta.json
index 9edd48b5d392..7586b32c21ed 100644
--- a/sdk/servicenetworking/azure-mgmt-servicenetworking/_meta.json
+++ b/sdk/servicenetworking/azure-mgmt-servicenetworking/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "ae6e92d62421bfafa2b695d742f3820d5de204eb",
+  "commit": "58fd65ff72a9a41f4f4349a57db3bd88ab6b8301",
   "repository_url": "https://github.com/Azure/azure-rest-api-specs",
   "typespec_src": "specification/servicenetworking/ServiceNetworking.Management",
   "@azure-tools/typespec-python": "0.38.1"
diff --git a/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/_version.py b/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/_version.py
index 8f2350dd3b0c..be71c81bd282 100644
--- a/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/_version.py
+++ b/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/_version.py
@@ -6,4 +6,4 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "2.0.0"
+VERSION = "1.0.0b1"
diff --git a/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/__init__.py b/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/__init__.py
index c33a93ce923e..511884b818e4 100644
--- a/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/__init__.py
+++ b/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/__init__.py
@@ -17,6 +17,7 @@
     Association,
     AssociationProperties,
     AssociationSubnet,
+    AssociationSubnetUpdate,
     AssociationUpdate,
     AssociationUpdateProperties,
     ErrorAdditionalInfo,
@@ -60,6 +61,7 @@
     "Association",
     "AssociationProperties",
     "AssociationSubnet",
+    "AssociationSubnetUpdate",
     "AssociationUpdate",
     "AssociationUpdateProperties",
     "ErrorAdditionalInfo",
diff --git a/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/_models.py b/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/_models.py
index 2940c27a0fad..a5657035ac34 100644
--- a/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/_models.py
+++ b/sdk/servicenetworking/azure-mgmt-servicenetworking/azure/mgmt/servicenetworking/models/_models.py
@@ -219,6 +219,36 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:
         super().__init__(*args, **kwargs)
 
 
+class AssociationSubnetUpdate(_model_base.Model):
+    """Association Subnet.
+
+    All required parameters must be populated in order to send to server.
+
+    :ivar id: Association ID. Required.
+    :vartype id: str
+    """
+
+    id: str = rest_field()
+    """Association ID. Required."""
+
+    @overload
+    def __init__(
+        self,
+        *,
+        id: str,  # pylint: disable=redefined-builtin
+    ) -> None: ...
+
+    @overload
+    def __init__(self, mapping: Mapping[str, Any]) -> None:
+        """
+        :param mapping: raw JSON to initialize the model.
+        :type mapping: Mapping[str, Any]
+        """
+
+    def __init__(self, *args: Any, **kwargs: Any) -> None:
+        super().__init__(*args, **kwargs)
+
+
 class AssociationUpdate(_model_base.Model):
     """The type used for update operations of the Association.
 
@@ -258,12 +288,12 @@ class AssociationUpdateProperties(_model_base.Model):
     :ivar association_type: Association Type. "subnets"
     :vartype association_type: str or ~azure.mgmt.servicenetworking.models.AssociationType
     :ivar subnet: Association Subnet.
-    :vartype subnet: ~azure.mgmt.servicenetworking.models.AssociationSubnet
+    :vartype subnet: ~azure.mgmt.servicenetworking.models.AssociationSubnetUpdate
     """
 
     association_type: Optional[Union[str, "_models.AssociationType"]] = rest_field(name="associationType")
     """Association Type. \"subnets\""""
-    subnet: Optional["_models.AssociationSubnet"] = rest_field()
+    subnet: Optional["_models.AssociationSubnetUpdate"] = rest_field()
     """Association Subnet."""
 
     @overload
@@ -271,7 +301,7 @@ def __init__(
         self,
         *,
         association_type: Optional[Union[str, "_models.AssociationType"]] = None,
-        subnet: Optional["_models.AssociationSubnet"] = None,
+        subnet: Optional["_models.AssociationSubnetUpdate"] = None,
     ) -> None: ...
 
     @overload
diff --git a/sdk/servicenetworking/azure-mgmt-servicenetworking/tsp-location.yaml b/sdk/servicenetworking/azure-mgmt-servicenetworking/tsp-location.yaml
index 62ee3451498f..a3e98e9a9973 100644
--- a/sdk/servicenetworking/azure-mgmt-servicenetworking/tsp-location.yaml
+++ b/sdk/servicenetworking/azure-mgmt-servicenetworking/tsp-location.yaml
@@ -1,4 +1,4 @@
 directory: specification/servicenetworking/ServiceNetworking.Management
-commit: ae6e92d62421bfafa2b695d742f3820d5de204eb
+commit: 58fd65ff72a9a41f4f4349a57db3bd88ab6b8301
 repo: Azure/azure-rest-api-specs
 additionalDirectories: